From: Tilman Schmidt <tilman@imap.cc>
Date: Sun, 7 Jun 2009 09:09:24 +0000 (+0000)
Subject: isdn: prevent NULL ptr Oops in capi_cmsg2str()
X-Git-Tag: v2.6.31-rc1~330^2~111
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d31acda9f8eaa27e2fd232712f7e1f3e9a79bdb;p=pandora-kernel.git

isdn: prevent NULL ptr Oops in capi_cmsg2str()

The dereferencing of the private pointer cmsg->m in capi_cmsg2str() may
cause an Oops in case of an error, which is particularly inconvenient
as that function is typically used to format an error message. Add a
NULL pointer check to avoid this.

Impact: error handling improvement
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
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